建筑钢结构进展2025，Vol.27Issue(7)：81-93,13.DOI:10.13969/j.jzgjgjz.20240229001
五边形三四撑杆全铰接弦支网壳静力及稳定性分析
Static and Stability Analysis of Pentagonal Three-Four-Strut Fully Hinged Cable-Supported Reticulated Shells
摘要
Abstract
The pentagonal three-four-strut fully hinged cable-supported reticulated shell,which is different from the multi-strut cable dome structure,the key difference lies in converting the upper ridge cables of the cable dome structure into ridge struts,and forms a fully hinged curved double-layer grid structure system composed of prestressed cables and struts,which is convenient for laying rigid roof and reduces cost.Compared with the traditional reticulated shell structure,this structure has the characteristics of good stability and economy construction.The lower chord joints of the structure are set with three or four struts,which effectively improves the lateral stiffness and stability of the whole structure.At the same time,the joints are hinged,which simplifies the joint structure and facilitates the tensioning construction.A finite element model was established using ANSYS to analyze the internal force change and displacement behavior of cables and struts under different combined loading conditions.At the same time,linear and nonlinear stability analysis was carried out based on different design load combination conditions.The analysis results show that the internal force distribution of the structure is reasonable,the cables and struts are not prone to failure under normal use,and the large-span development of the prefabricated space structure can be realized.The reticulated shell structure has good stability,and the main compressive forces are carried by the upper inner ridge cables.In nonlinear stability analysis,the stability bearing capacity of the structure will also change under different design load combination conditions.At the same time,the structure is more sensitive to defects.Based on the combined loading condition 1,the reasonable value of the initial geometric defects of the structure should be in the range of L/600～L/300.关键词
五边形三四撑杆全铰接弦支网壳/结构形态分析/预应力分析/静力性能/稳定性分析/初始缺陷大小Key words
pentagonal three-four-strut fully hinged cable-supported reticulated shell/structural form analysis/prestress analysis/static performance/stability analysis/initial defect size分类
建筑与水利引用本文复制引用
李丹,吕辉,董石麟,朱忠义..五边形三四撑杆全铰接弦支网壳静力及稳定性分析[J].建筑钢结构进展,2025,27(7):81-93,13.基金项目
国家自然科学基金(52278224),研究生创新专项基金(YC2023-076) （52278224）
